A blue sign with a diagram showing a branch off the road ahead and the following text.
Forward destinations: The NORTH; Stevenage.
Exit destinations: Hertford; A414; Welwyn; Gdn City ; A6129.
Junction number: 4.
This is a Dumbell junction - two roundabouts, one either side of the motorway - but with rather too many busy roads colliding on the east side of the A1(M) to make it successful. The A414 is a major dual carriageway heading east from here to Hertford.